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Médias (91)
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MediaSPIP Simple : futur thème graphique par défaut ?
26 septembre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Video
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avec chosen
13 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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sans chosen
13 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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config chosen
13 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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SPIP - plugins - embed code - Exemple
2 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
Autres articles (68)
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Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (6161)
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How would I send x264 encoded frames correctly over a network using UDP ?
5 avril 2020, par Eoin McBennettI'm trying to send the encoded h264 frames I have over a network as I get them, currently I'm only streaming the nal units I get from each frame as it is encoded, is this the correct approach ?



I wrote a receiver application on a different computer to get the nals and wrote them all to a file sequentially, when played with vlc I didn't get any video and instead just got a screeching noise. I'm not sure exactly where the problem would lie here. I have included the result of the FFmpeg -I command on the file created.



Encoder and sender code




 //Udp initialisation
 struct sockaddr_in broadcastAddr;
 int sock;
 int yes = 1;
 int addr_len;
 int count;
 fd_set readfd;
 char buffer[1024];
 int i;

 sock = socket(AF_INET, SOCK_DGRAM,0);

 if(sock < 0){
 std::cout << "Failed to initialise socket!" << std::endl;
 }

 int ret = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&yes, sizeof(yes));
 if(ret < 0){
 std::cout << "setsockopt error!" </ the size of the address

 memset((void*)&broadcastAddr,0,addr_len); //0 out the address bits

 broadcastAddr.sin_family = AF_INET;
 broadcastAddr.sin_addr.s_addr = INADDR_BROADCAST;
 broadcastAddr.sin_port = PORT;



 //Set the encoder parameters
 x264_param_t param;
 x264_param_default_preset(&param,"veryfast","zerolatency");
 param.i_threads = 1;
 param.i_width = camera.getWidth();
 param.i_height = camera.getHeight();
 param.i_fps_num = 30;
 param.i_fps_den = 1;
// Intra refres:
 param.i_keyint_max = 30;
 param.b_intra_refresh = 1;
//Rate control:
 param.rc.i_rc_method = X264_RC_CRF;
 param.rc.f_rf_constant = 25;
 param.rc.f_rf_constant_max = 35;
//For streaming:
 param.b_repeat_headers = 1;
 param.b_annexb = 1;
 x264_param_apply_profile(&param, "baseline");

 x264_t *encoder = x264_encoder_open(&param); //H.264 encoder object
 x264_picture_t pic_in, pic_out;
 x264_picture_alloc(&pic_in, X264_CSP_I420,camera.getWidth(), camera.getHeight());

 //Network abstraction layer units for broadcast
 x264_nal_t *nals;
 int i_nals;

 while(true){

 //If there is valid data in the processing queue
 if(!encoderQueue.empty()){

 //File the x264 input data structure with the file data
 fillImage(encoderQueue.front(),camera.getWidth(),camera.getHeight(),&pic_in);

 //Encode and send
 int frame_size = x264_encoder_encode(encoder, &nals, &i_nals, &pic_in, &pic_out);
 if (frame_size >= 0) {
 //The frame is ready to be sent over UDP!
 for(int i = 0; i < i_nals; i++){
 ret = sendto(sock, &nals[0].p_payload, frame_size,0,(struct sockaddr*)&broadcastAddr,addr_len);
 if(ret > 0){
 std::cout << "Streamed frame nal unit " << i << std::endl;
 } else{
 std::cout << "Failed to stream nal unit " << i << std::endl;
 }
 }
 }
 else{
 std::cout<<"Failed to encode h264 frame!" << std::endl;
 }
 //Finsihed with the current frame, pop it off the queue and remove any nals to do with it
 encoderQueue.pop();
 frame_size = 0;
 nals = nullptr;
 i_nals = 0;
 }


 }



Receiver application



#include <iostream>
#include 
#include <network></network>Network.h>
#include <netinet></netinet>in.h>
#include <arpa></arpa>inet.h>
#include <sys></sys>types.h>
#include <sys></sys>socket.h>
#include <queue>


#define BUFFER_LEN 10000
#define PORT_NO 3879



int main(int argc, const char * argv[]) {


 FILE *file; //File to write the h264 nals too

 //Declare the address memory space
 struct sockaddr_in sockAddr , bcAddr;
 socklen_t bcAddr_len = sizeof(&bcAddr); //Store the length of the broadcast address structure
 //0 out the assigned memory
 memset(&sockAddr, 0, sizeof(sockAddr));
 memset(&bcAddr, 0 ,sizeof(bcAddr));

 //Set the address parameters to look for incoming IpV4/UDP data
 sockAddr.sin_family = AF_INET;
 sockAddr.sin_port = htons(PORT_NO);
 sockAddr.sin_addr.s_addr = htonl(INADDR_ANY);

 bcAddr.sin_family = AF_INET;
 bcAddr.sin_port = PORT_NO;
 inet_aton("255.255.255.255",&bcAddr.sin_addr);

 //Initialise a udp socket to read broadcast bytes
 int soc = socket(AF_INET, SOCK_DGRAM,0);

 //Check socket init
 if(soc < 0){
 std::cout << "Failed to initialise UDP socket!" << std::endl;
 return -1;
 }

 //Bind the address details to the socket, check for errors
 if(bind(soc, (struct sockaddr*)&sockAddr, sizeof(sockAddr)) < 0){
 std::cout << "Failed to bind address structure to socket!" << std::endl;
 return -2;
 }

 file = fopen("stream.h264","wb"); // Open the file for writing

 unsigned char buffer[BUFFER_LEN];

 while(true){


 memset(&buffer, 0, sizeof(unsigned char) * BUFFER_LEN);

 int recv_len = recvfrom(soc, buffer, BUFFER_LEN, 0, (struct sockaddr *)&bcAddr, &bcAddr_len);

 std::cout<< "Received " << recv_len << "bytes on broadcast address" << std::endl;

 fwrite(&buffer, sizeof(unsigned char), recv_len, file);
 }

 return 0;
}
</queue></iostream>


FFMPEG -I output






Any help would be greatly appreciated.


-
How would I send x264 encoded frames correctly over a network using UDP ?
5 avril 2020, par Eoin McBennettI'm trying to send the encoded h264 frames I have over a network as I get them, currently I'm only streaming the nal units I get from each frame as it is encoded, is this the correct approach ?



I wrote a receiver application on a different computer to get the nals and wrote them all to a file sequentially, when played with vlc I didn't get any video and instead just got a screeching noise. I'm not sure exactly where the problem would lie here. I have included the result of the FFmpeg -I command on the file created.



Encoder and sender code




 //Udp initialisation
 struct sockaddr_in broadcastAddr;
 int sock;
 int yes = 1;
 int addr_len;
 int count;
 fd_set readfd;
 char buffer[1024];
 int i;

 sock = socket(AF_INET, SOCK_DGRAM,0);

 if(sock < 0){
 std::cout << "Failed to initialise socket!" << std::endl;
 }

 int ret = setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&yes, sizeof(yes));
 if(ret < 0){
 std::cout << "setsockopt error!" </ the size of the address

 memset((void*)&broadcastAddr,0,addr_len); //0 out the address bits

 broadcastAddr.sin_family = AF_INET;
 broadcastAddr.sin_addr.s_addr = INADDR_BROADCAST;
 broadcastAddr.sin_port = PORT;



 //Set the encoder parameters
 x264_param_t param;
 x264_param_default_preset(&param,"veryfast","zerolatency");
 param.i_threads = 1;
 param.i_width = camera.getWidth();
 param.i_height = camera.getHeight();
 param.i_fps_num = 30;
 param.i_fps_den = 1;
// Intra refres:
 param.i_keyint_max = 30;
 param.b_intra_refresh = 1;
//Rate control:
 param.rc.i_rc_method = X264_RC_CRF;
 param.rc.f_rf_constant = 25;
 param.rc.f_rf_constant_max = 35;
//For streaming:
 param.b_repeat_headers = 1;
 param.b_annexb = 1;
 x264_param_apply_profile(&param, "baseline");

 x264_t *encoder = x264_encoder_open(&param); //H.264 encoder object
 x264_picture_t pic_in, pic_out;
 x264_picture_alloc(&pic_in, X264_CSP_I420,camera.getWidth(), camera.getHeight());

 //Network abstraction layer units for broadcast
 x264_nal_t *nals;
 int i_nals;

 while(true){

 //If there is valid data in the processing queue
 if(!encoderQueue.empty()){

 //File the x264 input data structure with the file data
 fillImage(encoderQueue.front(),camera.getWidth(),camera.getHeight(),&pic_in);

 //Encode and send
 int frame_size = x264_encoder_encode(encoder, &nals, &i_nals, &pic_in, &pic_out);
 if (frame_size >= 0) {
 //The frame is ready to be sent over UDP!
 for(int i = 0; i < i_nals; i++){
 ret = sendto(sock, &nals[0].p_payload, frame_size,0,(struct sockaddr*)&broadcastAddr,addr_len);
 if(ret > 0){
 std::cout << "Streamed frame nal unit " << i << std::endl;
 } else{
 std::cout << "Failed to stream nal unit " << i << std::endl;
 }
 }
 }
 else{
 std::cout<<"Failed to encode h264 frame!" << std::endl;
 }
 //Finsihed with the current frame, pop it off the queue and remove any nals to do with it
 encoderQueue.pop();
 frame_size = 0;
 nals = nullptr;
 i_nals = 0;
 }


 }



Receiver application



#include <iostream>
#include 
#include <network></network>Network.h>
#include <netinet></netinet>in.h>
#include <arpa></arpa>inet.h>
#include <sys></sys>types.h>
#include <sys></sys>socket.h>
#include <queue>


#define BUFFER_LEN 10000
#define PORT_NO 3879



int main(int argc, const char * argv[]) {


 FILE *file; //File to write the h264 nals too

 //Declare the address memory space
 struct sockaddr_in sockAddr , bcAddr;
 socklen_t bcAddr_len = sizeof(&bcAddr); //Store the length of the broadcast address structure
 //0 out the assigned memory
 memset(&sockAddr, 0, sizeof(sockAddr));
 memset(&bcAddr, 0 ,sizeof(bcAddr));

 //Set the address parameters to look for incoming IpV4/UDP data
 sockAddr.sin_family = AF_INET;
 sockAddr.sin_port = htons(PORT_NO);
 sockAddr.sin_addr.s_addr = htonl(INADDR_ANY);

 bcAddr.sin_family = AF_INET;
 bcAddr.sin_port = PORT_NO;
 inet_aton("255.255.255.255",&bcAddr.sin_addr);

 //Initialise a udp socket to read broadcast bytes
 int soc = socket(AF_INET, SOCK_DGRAM,0);

 //Check socket init
 if(soc < 0){
 std::cout << "Failed to initialise UDP socket!" << std::endl;
 return -1;
 }

 //Bind the address details to the socket, check for errors
 if(bind(soc, (struct sockaddr*)&sockAddr, sizeof(sockAddr)) < 0){
 std::cout << "Failed to bind address structure to socket!" << std::endl;
 return -2;
 }

 file = fopen("stream.h264","wb"); // Open the file for writing

 unsigned char buffer[BUFFER_LEN];

 while(true){


 memset(&buffer, 0, sizeof(unsigned char) * BUFFER_LEN);

 int recv_len = recvfrom(soc, buffer, BUFFER_LEN, 0, (struct sockaddr *)&bcAddr, &bcAddr_len);

 std::cout<< "Received " << recv_len << "bytes on broadcast address" << std::endl;

 fwrite(&buffer, sizeof(unsigned char), recv_len, file);
 }

 return 0;
}
</queue></iostream>


FFMPEG -I output






Any help would be greatly appreciated.


-
fate/matroska : Add test for chapters, Vorbis and WebM DASH
13 avril 2020, par Andreas Rheinhardtfate/matroska : Add test for chapters, Vorbis and WebM DASH
Moreover, putting the Cues in front of the Clusters by reserving space
in advance is also tested.The new capability of using ffprobe during a remux/transcode test are
used here for information about the chapters.Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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